Improvement in window-blind operators



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GEORGE JENNISEN AND MERRIQK E. AOTIS, 0F 'WESTBOROUGE MASSACHUSETTS.

Letters Patent No. 113,301, dated April 4, 1871.

IMPROVEMENT IN WINDOW-BLIND-OPERATAORS.

The Schedule referred to ln these Letters Patent and making parl: ofthe-'sama To whom 'it may concern:

, Be it known that we, GEORGE J ENNISEN and MER- RICK F. OcrIs, ofWestborough`, county of Worcester, Commonwealth of Massachusetts, haveinvented a new andv improved- VpVindoW-Blind Operator; and we do herebydecla-re that the following is a full and exact description thereof5reference being had tothe accompan ying drawing and to the letters ofreference marked thereon making a part of this specification.

This invention consists in providing the operating-` rod of ashutter-Worker withV an adjusting-screw and nut for varying its length,and with a coil-spring to aid in its operation.

To enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation.

In the drawing- Figure 1 represents a sectional view of theWindowcasing, the operator passingthrough it and'attached .to the hingededgeof the blind.,

Figure? represents a section of the casing taken off at the undersidenof the operator. The dottedline marks the swing of the' blind as itis opened and closed by a pull at ythe knob.

`'Figure 3 represents rthe jointed rod. The dotted line is theswing-joint, and the` screw-connection is for shortening or lengtheningthe rod,"as the casing and frame may require.

In iig. l.-

A is the first joint ofthe rod, having la' 'screwcntA ou the'end, as'seen in iig. 3, and' is the part .whichis attached tothe inner edge ofthe blind. u

B is the swing-joint, and should have its position in the socket K, withroom to swing both to the left and.-

right of the center line. 1

O is the neX-t joint,'a1id is connected with part D.

by screw',4 forthe purpose of lengthening'or shortening the rod, as the'casing 4and frame may require.

E is a spiral spring placed onA the part D5 s0 as -to l What'we claim asour invention7 anddesire to secure by Letters Patent, is-

The combination', in @shutter-worker, of the `operating-rod D, with a.nut and screw-connection, and coil-spring E, all arranged as and for thepurpose shown. Y

GEGRGE JENNISEN.

` Witnessesz l MERRIGK F. OTIS.

J. HENRY HEL, JONA, LUTHER.

